The dashboard elements in my application do not update

I have an application with some 8 dashboard gauges in Simulink. Everything was running nice at the begining, but after the second execution all gauges are frozen and are updated only when the running is over. Everything else in the application is running as it should, only the gauges are frozen. For example, the numerical values in the numerical display are updated in real-time. I tried with both version 2016a and 2016b. Any idea?